Buckle



FIG. 1 is a perspective view of the buckle showing the new design;

FIG. 2 is an exploded perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a back view thereof;

FIG. 7 is a side view thereof; and,

FIG. 8 is the other side view thereof.

The broken line showing of buckle elements is included for the purpose of illustrating environmental matter and forms no part of the claimed design. 

The ornamental design for a buckle, as shown and described. 